Properties of Ytterbium and Copper
Melting Point
1,084.62 °C
  
40
Boiling Point
1,196.00 °C
  
99+
2,562.00 °C
  
99+
Hardness
  
  
Mohs Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
1,590.00 m/s
  
99+
3,810.00 m/s
  
19
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Yb
  
Cu
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
603.40 kJ/mol
  
99+
745.50 kJ/mol
  
22
2nd Energy Level
1,174.80 kJ/mol
  
99+
1,957.90 kJ/mol
  
15
3rd Energy Level
2,417.00 kJ/mol
  
99+
3,555.00 kJ/mol
  
15
Electrochemical Equivalent
2.15 g/amp-hr
  
25
1.19 g/amp-hr
  
99+
Electron Work Function
Not Available
  
Other Chemical Properties
Density
  
  
Density At Room Temperature
6.90 g/cm3
  
99+
8.96 g/cm3
  
99+
Density When Liquid (at m.p.)
6.21 g/cm3
  
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Symbol
Yb
  
Cu
  
Group Number
Not Available
  
Period Number
6
  
4
  
Atomic Weight
173.05 amu
  
99+
Atomic Volume
24.79 cm3/mol
  
9
7.10 cm3/mol
  
99+
Electron Configuration
[Xe] 4f14 6s2
  
[Ar] 3d10 4s1
  
Valence Electron Potential
50.30 (-eV)
  
27
34.00 (-eV)
  
99+
Atom
  
  
Crystal Lattice
FCC-Crystal-Structure-of-Ytterbium.jpg#100
  
FCC-Crystal-Structure-of-Copper.jpg#100
  
Radius of an Atom
  
  
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Resistivity
16.78 nΩ·m
  
99+
Electrical Conductivity
0.04 106/cm Ω
  
38
0.60 106/cm Ω
  
2
Electron Affinity
50.00 kJ/mol
  
21
222.80 kJ/mol
  
1
Magnetic Characteristics
  
  
Permeability
Not Available
  
1.256629 * 10
-6 H/m
  
5
Susceptibility
Not Available
  
-9.63 * 10
-6
  
4
Specific Heat
0.15 J/(kg K)
  
36
0.38 J/(kg K)
  
15
Thermal Conductivity
38.50 W/m·K
  
35
401.00 W/m·K
  
2
Critical Temperature
Not Available
  
Molar Heat Capacity
26.74 J/mol·K
  
25
24.44 J/mol·K
  
99+
Thermal Expansion
26.30 µm/(m·K)
  
14
16.50 µm/(m·K)
  
25
Standard Molar Entropy
59.90 J/mol.K
  
21
33.20 J/mol.K
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
128.90 kJ/mol
  
99+
283.70 kJ/mol
  
33
Enthalpy of Fusion
7.66 kJ/mol
  
99+
7.11 kJ/mol
  
99+
Enthalpy of Atomization
180.00 kJ/mol
  
99+
338.90 kJ/mol
  
29